122639578684 has 12 divisors (see below), whose sum is σ = 245279157424. Its totient is φ = 52559819424.

The previous prime is 122639578667. The next prime is 122639578703. The reversal of 122639578684 is 486875936221.

122639578684 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189992449 + ... + 2189992504.

Almost surely, 2^122639578684 is an apocalyptic number.

122639578684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

122639578684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122639578684 is a wasteful number, since it uses less digits than its factorization.

122639578684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379984964 (or 4379984962 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 122639578684 in words is "one hundred twenty-two billion, six hundred thirty-nine million, five hundred seventy-eight thousand, six hundred eighty-four".